EP0893735B1 - Vorbeschichtete plastische verschmolzene Teilchen als Schutzschicht für photographischen Farbbildern - Google Patents

Vorbeschichtete plastische verschmolzene Teilchen als Schutzschicht für photographischen Farbbildern Download PDF

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Publication number
EP0893735B1
EP0893735B1 EP98202338A EP98202338A EP0893735B1 EP 0893735 B1 EP0893735 B1 EP 0893735B1 EP 98202338 A EP98202338 A EP 98202338A EP 98202338 A EP98202338 A EP 98202338A EP 0893735 B1 EP0893735 B1 EP 0893735B1
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EP
European Patent Office
Prior art keywords
poly
photographic element
coating
protective overcoat
imaged
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98202338A
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English (en)
French (fr)
Other versions
EP0893735A1 (de
Inventor
Anne Elizabeth Bohan
Vito Anthony Depalma
William K. Goebel
Amy Elizabeth Jasek
Thomas Haile Whitesides
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Eastman Kodak Co
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Eastman Kodak Co
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Publication date
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of EP0893735A1 publication Critical patent/EP0893735A1/de
Application granted granted Critical
Publication of EP0893735B1 publication Critical patent/EP0893735B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/7614—Cover layers; Backing layers; Base or auxiliary layers characterised by means for lubricating, for rendering anti-abrasive or for preventing adhesion
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C11/00—Auxiliary processes in photography
    • G03C11/08—Varnishing, e.g. application of protective layers on finished photographic prints
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/74—Applying photosensitive compositions to the base; Drying processes therefor
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/74—Applying photosensitive compositions to the base; Drying processes therefor
    • G03C2001/7481—Coating simultaneously multiple layers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/7614—Cover layers; Backing layers; Base or auxiliary layers characterised by means for lubricating, for rendering anti-abrasive or for preventing adhesion
    • G03C2001/7635—Protective layer
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C2200/00—Details
    • G03C2200/36—Latex
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/162—Protective or antiabrasion layer

Definitions

  • Silver halide photographic elements contain light sensitive silver halide in a hydrophilic emulsion. An image is formed in the element by exposing the silver halide to light, or to other actinic radiation, and developing the exposed silver halide to reduce it to elemental silver.
  • a dye image is formed as a consequence of silver halide development by one of several different processes. The most common is to allow a by-product of silver halide development, oxidized silver halide developing agent, to react with a dye forming compound called a coupler. The silver and unreacted silver halide are then removed from the photographic element, leaving a dye image.
  • gelatin, and similar natural or synthetic hydrophilic polymers have proven to be the binders of choice for silver halide photographic elements.
  • gelatin, and similar polymers are formulated so as to facilitate contact between the silver halide crystal and aqueous processing solutions, they are not as tough and mar-resistant as would be desired for something that is handled in the way that an imaged photographic element may be handled.
  • the imaged element can be easily marked by fingerprints, it can be scratched or torn and it can swell or otherwise deform when it is contacted with liquids.
  • US Patent No. 2,173,480 describes a method of applying a colloidal suspension to moist film as the last step of photographic processing before drying.
  • a series of patents describes methods of solvent coating a protective layer on the image after photographic processing is completed and are descibed in US Patent Nos. 2,259,009, 2,331,746, 2,798,004, 3,113,867, 3,190,197, 3,415,670 and 3,733,293.
  • the application of UV-polymerizable monomers and oligomers on processed image followed by radiation exposure to form crosslinked protective layer is described US Patent Nos.
  • 2,706,686 describes the formation of a lacquer finish for photographic emulsions, with the aim of providing water- and fingerprint-resistance by coating the emulsion, prior to exposure, with a porous layer that has a high degree of water permeability to the processing solutions. After processing, the lacquer layer is fused and coalesced into a continuous, impervious coating.
  • the porous layer is achieved by coating a mixture of a lacquer and a solid removable extender (ammonium carbonate), and removing the extender by sublimation or dissolution during processing.
  • the overcoat as described is coated as a suspension in an organic solvent, and thus is not desirable for large-scale application.
  • 3,443,946 provides a roughened (matte) scratch-protective layer, but not a water-impermeable one.
  • US Patent No. 3,502,501 provides protection against mechanical damage only; the layer in question contains a majority of hydrophilic polymeric materials, and must be permeable to water in order to maintain processability.
  • US Patent No. 5,179,147 likewise provides a layer that is not water-protective.
  • the aim of this invention is to provide a protective overcoat to the emulsion side of photographic products, particularly photographic prints.
  • the protective overcoat of the invention is coatable from aqueous solution, survives exposure and processing, and forms a continuous, water-impermeable protective layer in a post-process fusing step.
  • the overcoat is formed by coating polymer beads or particles of 0.1 to 50 microns in average size together with a polymer latex binder on the emulsion side of a sensitized photographic product.
  • a small amount of water-soluble coating aids can be included in the layer, as long as they leach out of the coating during processing.
  • the product with image is treated in such a way as to cause fusing and coalescence of the coated polymer beads, by heat and/or pressure (fusing), solvent treatment, or other means so as to form the desired continuous, water impermeable protective layer.
  • polymers from which the polymer particles used in this invention can be selected include poly(vinyl chloride), poly(vinylidene chloride), poly(vinyl chloride-co-vinylidene chloride), chlorinated polypropylene, poly(vinyl chloride-co-vinyl acetate), poly(vinyl chloride-co-vinyl acetate-co-maleic anhydride), ethyl cellulose, nitrocellulose, poly(acrylic acid) esters, linseed oil-modified alkyd resins, rosin-modified alkyd resins, phenol-modified alkyd resins, phenolic resins, polyesters, poly(vinyl butyral), polyisocyanate resins, polyurethanes, poly(vinyl acetate), polyamides, chroman resins, dammar gum, ketone resins, maleic acid resins, vinyl polymers, such as polystyrene and polyvinyltoluene or copo
  • the polymer comprises a polyester or poly(styrene-co-butyl acrylate).
  • Preferred polyesters are based on ethoxylated and/or propoxylated bisphenol A and one or more of terephthalic acid, dodecenylsuccinic acid and fumaric acid.
  • polymers which are crosslinked or branched can be used.
  • poly(styrene-co-indene-co-divinylbenzene), poly(styrene-co-acrylonitrile-co-divinylbenzene), or poly(styrene-co-butadiene-co-divinylbenzene) can be used.
  • the polymer particles should be clear, i.e., transparent, and are preferably colorless. But it is specifically contemplated that the polymer particle can have some color for the purposes of color correction, or for special effects, so long as the image is viewable through the overcoat. Thus, there can be incorporated into the polymer particle dye which will impart color. In addition, additives can be incorporated into the polymer particle which will give to the overcoat desired properties. For example, a UV absorber can be incorporated into the polymer particle to make the overcoat UV absorptive, thus protecting the image from UV induced fading.
  • the polymer particles which form the overcoat there can be combined with the polymer composition other particles which will modify the surface characteristics of the element.
  • Such particle are solid and nonfusible at the conditions under which the polymer particles are fused, and include inorganic particles, like silica, and organic particles, like methylmethacrylate beads, which will not melt during the fusing step and which will impart surface roughness to the overcoat.
  • the surface characteristics of the overcoat are in large part dependent upon the physical characteristics of the polymer which forms the toner and the presence or absence of solid, nonfusible particles.
  • the surface characteristics of the overcoat also can be modified by the conditions under which the surface is fused.
  • the surface characteristics of the fusing member that is used to fuse the toner to form the continuous overcoat layer can be selected to impart a desired degree of smoothness, texture or pattern to the surface of the element.
  • a highly smooth fusing member will give a glossy surface to the imaged element
  • a textured fusing member will give a matte or otherwise textured surface to the element
  • a patterned fusing member will apply a pattern to the surface of the element, etc.
  • polymer latex binder examples include a latex copolymer of butyl acrylate, 2-acrylamido-2-methylpropanesulfonate, and acetoacetoxyethylmethacrylate.
  • Other latex polymers which are useful include polymers having a 20 to 10,000 nm diameter a Tg of less than 60 °C suspended in water as a colloidal suspension.
  • coating aids include any water soluble polymer or other material that imparts appreciable viscosity to the coating suspension, such as high MW polysaccharide derivatives (e.g. xanthan gum, guar gum, gum acacia, Keltrol (an anionic polysaccharide supplied by Merck and Co., Inc.) high MW polyvinyl alcohol, carboxymethylcellulose, hydroxyethylcellulose, polyacrylic acid and its salts, polyacrylamide, etc).
  • surfactants include any surface active material that will lower the surface tension of the coating preparation sufficiently to prevent edge-withdrawal, repellencies, and other coating defects.
  • alkyloxy- or alkylphenoxypolyether or polyglycidol derivatives and their sulfates such as nonylphenoxypoly(glycidol) available from Olin Matheson Corporation or sodium octylphenoxypoly(ethyleneoxide) sulfate, organic sulfates or sulfonates, such as sodium dodecyl sulfate, sodium dodecyl sulfonate, sodium bis(2-ethylhexyl)sulfosuccinate (Aerosol OT), and alkylcarboxylate salts such as sodium decanoate.
  • alkyloxy- or alkylphenoxypolyether or polyglycidol derivatives and their sulfates such as nonylphenoxypoly(glycidol) available from Olin Matheson Corporation or sodium octylphenoxypoly(ethyleneoxide) sulfate, organic sulfates or sulf
  • the imaged photographic elements protected in accordance with this invention are derived from silver halide photographic elements that can be black and white elements (for example, those which yield a silver image or those which yield a neutral tone image from a mixture of dye forming couplers), single color elements or multicolor elements.
  • Multicolor elements typically contain dye image-forming units sensitive to each of the three primary regions of the spectrum.
  • the imaged elements can be imaged elements which are viewed by transmission, such a negative film images, reversal film images and motion picture prints or they can be imaged elements that are viewed by reflection, such a paper prints. Because of the amount of handling that can occur with paper prints and motion picture prints, they are preferred imaged photographic elements for use in this invention.
  • an overcoat may also protect the image from fading or yellowing.
  • the fading of dyes derived from pyrazolone and pyrazoloazole couplers is believed to be caused, at least in part, by the presence of oxygen, so that the application of an overcoat which acts as a barrier to the passage of oxygen into the element will reduce such fading.
  • a typical multicolor photographic element comprises a support bearing a cyan dye image-forming unit comprised of at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, and a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler.
  • the element can contain additional layers, such as filter layers, interlayers, overcoat layers, subbing layers, and the like. All of these can be coated on a support which can be transparent (for example, a film support) or reflective (for example, a paper support).
  • Photographic elements protected in accordance with the present invention may also include a magnetic recording material as described in Research Disclosure , Item 34390, November 1992, or a transparent magnetic recording layer such as a layer containing magnetic particles on the underside of a transparent support as described in US 4,279,945 and US 4,302,523.
  • Suitable silver halide emulsions and their preparation, as well as methods of chemical and spectral sensitization, are described in Sections I through V of Research Disclosures 37038 and 38957. Color materials and development modifiers are described in Sections V through XX of Research Disclosures 37038 and 38957. Vehicles are described in Section II of Research Disclosures 37038 and 38957, and various additives such as brighteners, antifoggants, stabilizers, light absorbing and scattering materials, hardeners, coating aids, plasticizers, lubricants and matting agents are described in Sections VI through X and XI through XIV of Research Disclosures 37038 and 38957. Processing methods and agents are described in Sections XIX and XX of Research Disclosures 37038 and 38957, and methods of exposure are described in Section XVI of Research Disclosures 37038 and 38957.
  • Photographic elements typically provide the silver halide in the form of an emulsion.
  • Photographic emulsions generally include a vehicle for coating the emulsion as a layer of a photographic element.
  • Useful vehicles include both naturally occurring substances such as proteins, protein derivatives, cellulose derivatives (e.g., cellulose esters), gelatin (e.g., alkali-treated gelatin such as cattle bone or hide gelatin, or acid treated gelatin such as pigskin gelatin), gelatin derivatives (e.g., acetylated gelatin, phthalated gelatin, and the like).
  • Also useful as vehicles or vehicle extenders are hydrophilic water-permeable colloids.
  • polystyrene resin examples include synthetic polymeric peptizers, carriers, and/or binders such as poly(vinyl alcohol), poly(vinyl lactams), acrylamide polymers, polyvinyl acetals, polymers of alkyl and sulfoalkyl acrylates and methacrylates, hydrolyzed polyvinyl acetates, polyamides, polyvinyl pyridine, methacrylamide copolymers, and the like.
  • synthetic polymeric peptizers, carriers, and/or binders such as poly(vinyl alcohol), poly(vinyl lactams), acrylamide polymers, polyvinyl acetals, polymers of alkyl and sulfoalkyl acrylates and methacrylates, hydrolyzed polyvinyl acetates, polyamides, polyvinyl pyridine, methacrylamide copolymers, and the like.
  • Photographic elements can be imagewise exposed using a variety of techniques. Typically exposure is to light in the visible region of the spectrum, and typically is of a live image through a lens. Exposure can also be to a stored image (such as a computer stored image) by means of light emitting devices (such as LEDs, CRTs, etc.).
  • Exposure can also be to a stored image (such as a computer stored image) by means of light emitting devices (such as LEDs, CRTs, etc.).
  • Images can be developed in photographic elements in any of a number of well known photographic processes utilizing any of a number of well known processing compositions, described, for example, in T.H. James, editor, The Theory of the Photographic Process , 4th Edition, Macmillan, New York, 1977.
  • a color developer that is one which will form the colored image dyes with the color couplers
  • an oxidizer and a solvent to remove silver and silver halide.
  • the element is first treated with a black and white developer (that is, a developer which does not form colored dyes with the coupler compounds) followed by a treatment to render developable unexposed silver halide (usually chemical or light fogging), followed by treatment with a color developer.
  • a black and white developer that is, a developer which does not form colored dyes with the coupler compounds
  • a treatment to render developable unexposed silver halide usually chemical or light fogging
  • development is followed by bleach-fixing, to remove silver or silver halide, washing and drying.
  • melts were prepared as above using bisphenol A polyester particles at several levels (10 micron particle size). These were applied to the same support as in Example 1 under the same conditions using a 3 mil coating knife. The coatings were fused and evaluated as before. The melt compositions and results are shown in Tables 3 and 4.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Paints Or Removers (AREA)

Claims (10)

  1. Bebildertes fotografisches Element mit einer darauf angeordneten Schutzschicht, wobei die Schutzschicht in folgenden Schritten aufbringbar ist:
    Bereitstellen eines fotografischen Elements mit mindestens einer lichtempfindlichen Silberhalogenid-Emulsionsschicht;
    Aufbringen einer wässrigen Beschichtung aus Polymerpartikeln einer mittleren Größe von 0,1 bis 50 µm mit 5 bis 50 Gew.-% und einem Polymerlatexbindemittel mit 1 bis 3 Gew.-% über der mindestens einen lichtempfindlichen Silberhalogenid-Emulsionsschicht;
    Entwickeln der mindestens einen lichtempfindlichen Silberhalogenid-Emulsionsschicht zur Herstellung eines bebilderten fotografischen Elements; und
    Fixieren der hydrophoben Polymerpartikel zur Ausbildung einer Schutzschicht.
  2. Bebildertes fotografisches Element mit der Schutzschicht nach Anspruch 1, dadurch gekennzeichnet, dass die Beschichtung zudem Beschichtungshilfen umfasst, die aus der Gruppe wählbar sind, die Xanthan, Guargummi, Gummiarabicum, ein anionisches Polysaccharid, Polyvinylalkohol, Carboxymethylcellulose, Hydroxyethylcellulose, Polyacrylsäure, Salze von Polyacrylsäure, Polyacrylamid, Alkyloxy- oder Alkylphenoxypolyether, Polyglycidolderivate, Sulfate von Polyglycidolderivaten, Natriumoctylphenoxypoly(ethylenoxid)sulfat, organische Sulfate und organische Sulfonate umfasst.
  3. Bebildertes fotografisches Element mit der Schutzschicht nach Anspruch 1, dadurch gekennzeichnet, dass die Polymerpartikel ein Polymer umfassen, dass aus der Gruppe wählbar ist, die Poly(vinylchlorid), Poly(vinylidenchlorid), Poly(vinylchlorid-Co-Vinylidenchlorid), chloriertes Polypropylen, Poly(vinylchlorid-Co-Vinylacetat), Poly(vinylchlorid-Co-Vinylacetat-Co-Maleinsäureanhydrid), Ethylcellulose, Nitrocellulose, Poly(acrylsäure)ester, leinölmodifizierte Alkydharze, harzmodifizierte Alkydharze, phenolmodifizierte Alkydharze, Phenolharze, Polyester, Poly(vinylbutyral), Polyisocyanatharze, Polyurethane, Poly(vinylacetat), Polyamide, Chromanharze, Dammargummi, Ketonharze, Maleinsäureharze, Vinylpolymere, wie Polystyrol und Polyvinyltoluol oder Copolymer von Vinylpolymeren mit Methacrylaten oder Acrylaten, Poly(tetrafluorethylen-Hexafluorpropylen), Polyethylen, phenolmodifizierte Pentaerythritolester, Poly(styrol-Co-Inden-Co-Acrylnitril), Poly(styrol-Co-Inden), Poly(styrol-Co-Acrylnitril), Poly(styrol-Co-Butadien), Poly(stearylmethacrylat) gemischt mit Poly(methylmethacrylat), Copolymere mit Siloxanen und Polyalkene umfasst.
  4. Bebildertes fotografisches Element mit der Schutzschicht nach Anspruch 1, dadurch gekennzeichnet, dass das bebilderte fotografische Element ein fotografisches Bild auf einem transparenten Träger ist.
  5. Bebildertes fotografisches Element mit der Schutzschicht nach Anspruch 1, dadurch gekennzeichnet, dass das bebilderte fotografische Element ein fotografisches Bild auf einem reflektierenden Träger ist.
  6. Bebildertes fotografisches Element mit der Schutzschicht nach Anspruch 1, dadurch gekennzeichnet, dass die mindestens eine lichtempfindliche Silberhalogenid-Emulsionsschicht gleichzeitig mit Aufbringen der Schicht aufgebracht wird.
  7. Bebildertes fotografisches Element mit der Schutzschicht nach Anspruch 1, dadurch gekennzeichnet, dass die Partikelgröße der Polymerpartikel zwischen 1 und 20 µm beträgt und vorzugsweise zwischen 1 und 10 µm.
  8. Bebildertes fotografisches Element nach Anspruch 1, dadurch gekennzeichnet, dass das Polymer-latexbindemittel ein Copolymer von Butylacrylat, 2-Acrylamid-2-Methylpropansulfonat und Acetoacetoxyethylmethacrylat umfasst.
  9. Bebildertes fotografisches Element mit der Schutzschicht nach Anspruch 1, dadurch gekennzeichnet, dass das Polymerlatexbindemittel eine Glasübergangstemperatur Tg von kleiner als 100°C aufweist, vorzugsweise von kleiner als 50°C und am besten von kleiner als 30°C.
  10. Bebildertes fotografisches Element nach Anspruch 1, dadurch gekennzeichnet, dass die Beschichtung eine Viskosität von mindestens 5 mPa-s aufweist.
EP98202338A 1997-07-23 1998-07-11 Vorbeschichtete plastische verschmolzene Teilchen als Schutzschicht für photographischen Farbbildern Expired - Lifetime EP0893735B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/898,987 US5853926A (en) 1997-07-23 1997-07-23 Pre-coated, fused plastic particles as a protective overcoat for color photographic prints
US898987 1997-07-23

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EP0893735A1 EP0893735A1 (de) 1999-01-27
EP0893735B1 true EP0893735B1 (de) 2004-03-24

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EP (1) EP0893735B1 (de)
JP (1) JPH1184611A (de)
DE (1) DE69822564T2 (de)

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US6376160B1 (en) * 2000-10-30 2002-04-23 Eastman Kodak Company Protective epoxy overcoat for photographic elements
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CN102471635B (zh) 2009-08-11 2015-07-29 威士伯采购公司 聚合物颗粒以及由该聚合物颗粒配制的涂料组合物

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US5853926A (en) 1998-12-29
JPH1184611A (ja) 1999-03-26
DE69822564D1 (de) 2004-04-29
EP0893735A1 (de) 1999-01-27
DE69822564T2 (de) 2005-02-24

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